Wireless powering of utility equipments in a smart home using magnetic resonance

Abstract

Wireless power transfer systems are in vogue today and are being widely used in divergent fields like mobile charging systems, medical implants and powering utility devices in smart homes. Magnetic resonance technology between source and load resonators has been demonstrated as a potential means of non-radiative power transfer. In this paper, the basic circuit for a single source and receiver geometry is discussed and extended to describe the system with a single source resonator pair and a receiver resonator pair. Wireless power transfer to a light load is experimentally demonstrated using a source coil and a receiving coil made of 21 SWG copper coils. The system is extended to a source coil powering a source resonator and a receiver resonator powering a load coil. The near electromagnetic field of a wireless power transfer system is used to ionize the mercury vapour to light up a fluorescent tube without the aid of wires.